.dropload-up,.dropload-down{
    position: relative;
    height: 0;
    overflow: hidden;
    font-size: 0.3rem;
    /* 开启硬件加速 */
    -webkit-transform:translateZ(0);
    transform:translateZ(0);
    color: #BBB;
    background-color: #f5f5f5;
}
.dropload-down{
    height: 1.25rem;
    width: 100%;
}
.dropload-refresh,.dropload-update,.dropload-load,.dropload-noData{
    height: 1.25rem;
    line-height: 1.25rem;
    text-align: center;
}